The invention discloses an LED (Light Emitting Diode) combination instrument board subassembly of a vehicle, and the subassembly comprises a shell; four mounting fixed holes are formed in the top of the shell; a fourth fixed plug pin and a first fixed plug pin are arranged at two ends of the top of the shell; a fixed insertion strip is arranged at the bottom of the shell; a third fixed plug pin and a second fixed plug pin are arranged at two ends of the bottom of the shell; solid wood panels are connected to two ends of a front surface of the shell in a hot-pressing manner; LED light troughs are formed in the shells at the bottom of the solid wood panels; an LED display screen fixing plate is connected to the interior of the shell in a clamping manner; rotating shafts are arranged at middle parts of the two ends of the LED display screen fixing plates; one end of each of the rotating shafts is connected with a rotating shaft hole formed in each of the middle parts of the sides of the shell in the clamping manner; is provided with a strip-shaped projection lamp mounting groove is formed in the bottom of the inner side of the shell. The LED combination instrument board subassembly enables a mounting way of an LED instrument board of a new energy vehicle to be simple and convenient, the instrument board subassembly of the vehicle is integrally machined by use of a slush molding process so that the LED instrument board is mounted more rapidly, and the instrument board is convenient to maintain in the future.